The Ring of Fallen Stars (possible spoilers)

If you try to sell the Ring of Fallen Stars in a shop, you are offered 1 CP for it. This is the same as in the original game but I feel it's a bit low for an item that can be used to cast Meteor Storm Bombardment, an 8th level spell! 
Is this a bug, or is it working as intended?
Attaching screenshot and a savegame for reference.


Is this a bug, or is it working as intended?
Attaching screenshot and a savegame for reference.

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